IEEE Std 1547a-2020 pdf download

IEEE Std 1547a-2020 pdf download.IEEE Standard for Interconnection and Interoperability of Distributed Energy Resources with Associated Electric Power Systems Interfaces Amendment 1: To Provide More Flexibility for Adoption of Abnormal Operating Performance Category III.
NOTE—The editing instructions contained in this amendment define how to merge the material contained therein into the existing base standard and its amendments to form the comprehensive standard.
The editing instructions are shown in bold italic. Four editing instructions are used: change, delete, insert, and replace. Change is used to make corrections in existing text or tables. The editing instruction specifics the location of the change and describes what is being changed by using stñkethrough (to remove old material) and underscore (to add new material). Delete removes existing material, insert adds new material without disturbing the existing material. Insertions may require renumbering. If so, renumbering instructions are given in the editing instruction. Replace is used to make changes in figures or equations by removing the existing figure or equation and replacing it with a new one. Editing instructions, change markings, and this NOTE will not be carried over into future editions because the changes will be incorporated into the base standard.
a The Area EPS operator may specify other voltage and clearing rime trip settings within the range of allowable settings, e.g., to consider
Area EPS protection coordination.
b Nominal system voltages stated in ANSI C84. I, Table I or as otherwise defined by the Area EPS operator. The ranges of allowable settings do not mandate a requirement for the DER to ride through this magnitude and duration of abnormal voltage condition. The Area EPS operator may specify the voltage thresholds and maximum clearing times within the ranges of allowable settings: settings outside of these ranges shall only be allowed as necessary for DER equipment protection and shall not conflict with the voltage disturbance ride-through requirements specified in 6.4.2. For the overvoltage (OV) and undervoltage (UV) trip functions clearing time ranges and for the OV trip functions voltage ranges, the lower value is a limiting requirement (the setting shall not be set to lower values) and the upper value is a minimum requiremelu (the selling may be set above this value). For ihe UV trip functions voltage ranges, the upper value is a limiting requirement (the setting shall not be set to greater values) and the lower value is a minimum requirement (the setting may be set to lower values).